10(a+8)=4[a-(9-a)]

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Solution for 10(a+8)=4[a-(9-a)] equation:


Simplifying
10(a + 8) = 4[a + -1(9 + -1a)]

Reorder the terms:
10(8 + a) = 4[a + -1(9 + -1a)]
(8 * 10 + a * 10) = 4[a + -1(9 + -1a)]
(80 + 10a) = 4[a + -1(9 + -1a)]
80 + 10a = 4[a + (9 * -1 + -1a * -1)]
80 + 10a = 4[a + (-9 + 1a)]

Reorder the terms:
80 + 10a = 4[-9 + a + 1a]

Combine like terms: a + 1a = 2a
80 + 10a = 4[-9 + 2a]
80 + 10a = [-9 * 4 + 2a * 4]
80 + 10a = [-36 + 8a]

Solving
80 + 10a = -36 + 8a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-8a' to each side of the equation.
80 + 10a + -8a = -36 + 8a + -8a

Combine like terms: 10a + -8a = 2a
80 + 2a = -36 + 8a + -8a

Combine like terms: 8a + -8a = 0
80 + 2a = -36 + 0
80 + 2a = -36

Add '-80' to each side of the equation.
80 + -80 + 2a = -36 + -80

Combine like terms: 80 + -80 = 0
0 + 2a = -36 + -80
2a = -36 + -80

Combine like terms: -36 + -80 = -116
2a = -116

Divide each side by '2'.
a = -58

Simplifying
a = -58

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